* {
    margin: 0;
    padding: 0;
}

.index-box {
    width: 100%;
}

/* 导航 */
.nav-box {
    width: 100%;
    height: 88px;
    background-color: #fff;
    box-sizing: border-box;
    padding: 0 190px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    left: 0;
    top: 0;
}

.nav-logo {
    width: 58px;
    height: auto;
}

.nav-title {
    font-family: SourceHanSansSC-Regular;
	font-size: 22px;
	font-weight: normal;
	font-stretch: normal;
	letter-spacing: 0px;
	color: #c8a25b;
    margin-left: 10px;
}

.navUl-box {
    width: auto;
    display: flex;
    align-items: center;
}

.navLi-item {
    width: auto;
    color: #828282;
    font-size: 18px;
    padding: 10px 20px;
}

.navLi-item a {
    font-family: SourceHanSansSC-Medium;
    font-size: 18px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 45px;
    letter-spacing: 2px;
    color: #828282;
}

.navActive {
    border-bottom: 2px solid #828282;
}

/* 主图 */
.mainImg-box {
    width: 100%;
}

.mainImg {
    width: 100%;
    height: auto;
    display: block;
}

/* 公用标题 */
.title-box {
    width: 100%;
    text-align: center;
}

.title-left {
    font-family: SourceHanSansSC-Medium;
    font-size: 26px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 48px;
    letter-spacing: 0px;
    color: #333333;
}

.title-right {
    font-family: SourceHanSansSC-Regular;
    font-size: 26px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 48px;
    letter-spacing: 0px;
    color: #aaaaaa;
}

/* 平台介绍 */
.introduction-box {
    width: 100%;
    box-sizing: border-box;
    padding: 40px 180px 100px 180px;
}

.introduction-title {
    font-family: SourceHanSansSC-Regular;
    font-size: 18px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 48px;
    letter-spacing: 0px;
    color: #999999;
    padding: 20px 0 40px 0;
}

.introductionUl-box {
    width: 100%;
    display: flex;
    justify-content: space-between;
}

.introductionLi-box {
    width: 375px;
    height: 420px;
    background-color: #ffffff;
    box-shadow: 0px 0px 10px #d9e7ff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    padding: 0 20px;
}

.introductionLi-box .content-box {
    width: 100%;
    height: auto;
    text-align: center;
}

.introductionLiLogo-box {
    width: 100%;
    text-align: center;
}

.introductionLiLogo {
    display: block;
    width: auto;
    height: 125px;
    display: block;
    margin: auto;
}

.introductionTitle {
    font-family: SourceHanSansSC-Regular;
    font-size: 16px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 48px;
    letter-spacing: 0px;
    color: #333333;
}

.introductionLabel {
    font-family: SourceHanSansSC-Regular;
    font-size: 14px;
    font-weight: normal;
    font-stretch: normal;
    letter-spacing: 0px;
    color: #666666;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    text-align: left;
}

/* 产品展示 */
.productDisplay-box {
    width: 100%;
    background-color: #f8f8fa;
    box-sizing: border-box;
    padding: 40px 180px;
}

.displayImg {
    width: 100%;
    height: auto;
}

/* 联系我们 */
.contact-box {
    width: 100%;
    box-sizing: border-box;
    padding: 40px 300px;
}

.contact-box .content-box {
    width: 100%;
    display: flex;
    margin-top: 80px;
}

.contactItem {
    width: 50%;
    box-sizing: border-box;
    padding: 10px 29px;
}

.contactItem-title {
    font-family: SourceHanSansSC-Regular;
    font-size: 18px;
    font-weight: normal;
    font-stretch: normal;
    letter-spacing: 0px;
    color: #333333;
    margin-bottom: 30px;
}

.contactItem-label {
    font-family: SourceHanSansSC-Regular;
    font-size: 14px;
    font-weight: normal;
    font-stretch: normal;
    letter-spacing: 0px;
    color: #666666;
    line-height: 1.5;
}

/* 页脚 */
.footer-box {
    width: 100%;
    border-top: 2px solid #ececec;
    padding: 15px 0;
    text-align: center;

}